Finding the Fourth Proportional to 98,777.12, 136,315.68 and 54,065.12
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Solution
The fourth proportional to 98,777.12, 136,315.68 and 54,065.12 is: 74,611.65
Step by Step Solution
- Step 1: Write the proportion equation
98,777.12 : 136,315.68 = 54,065.12 : x - Step 2: Convert to fraction form
98,777.12/136,315.68 = 54,065.12/x - Step 3: Cross multiply
98,777.12x = 136,315.68 × 54,065.12 - Step 4: Simplify right side
98,777.12x = 7,369,923,597.08 - Step 5: Solve for x
x = 7,369,923,597.08/98,777.12 - Step 6: Final answer
x = 74,611.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.